ThenPaulgoesfarther，andwithevengreaterboldnessadds，\"WhethertherebyKNOWLEDGE，itshallbedoneaway。\"Thewisdomoftheancients，whereisit？ItiswhollygoneAschoolboyto-dayknowsmorethanSirIsaacNewtonknew；hisknowledgehasvanishedawayYouputyesterday\'snewspaperinthefire:itsknowledgehasvanishedawayYoubuytheoldeditionsofthegreatencyclopaediasforafewcents:theirknowledgehasvanishedawayLookhowthecoachhasbeensupersededbytheuseofsteamLookhowelectricityhassupersededthat，andsweptahundredalmostnewinventionsintooblivionOneofthegreatestlivingauthorities，SirWilliamThompson，saidinScotland，atameetingatwhichIwaspresent，\"Thesteam-engineispassingaway。\"\"Whethertherebeknowledge，itshallvanishaway。\"Ateveryworkshopyouwillsee，inthebackyard，aheapofoldiron，afewwheels，afewlevers，afewcranks，brokenandeatenwithrustTwentyyearsagothatwastheprideofthecityMenflockedinfromthecountrytoseethegreatinvention；notitissuperseded，itsdayisdoneAndalltheboastedscienceandphilosophyofthisdaywillsoonbeold。
Inmytime，intheuniversityofEdinburgh，thegreatestfigureinthefacultywasSirJamesSimpson，thediscovererofcholoform。
Recentlyhissuccessorandnephew，ProfessorSimpson，wasaskedbythelibrarianoftheUniversitytogotothelibraryandpickoutthebooksonhissubjectmidwiferythatwerenolongerneeded。
Hisreplytothelibrarianwasthis:
\"Takeeverytext-bookthatismorethantenyearsoldandputitdowninthecellar。\"